Change --mirror to --bare in gclient_scm.py for cache directories

gclient_scm.py

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Gclient-specific SCM-specific operations."""
 
 import collections
 import logging
 import os
 import posixpath
@@ skipping 778 matching lines @@
         os.path.exists(checkout_objects) and
         not os.path.exists(checkout_altfile))
 
     v = ['-v'] if options.verbose else []
     filter_fn = lambda l: '[up to date]' not in l
     with self.cache_locks[folder]:
       gclient_utils.safe_makedirs(self.cache_dir)
       if not os.path.exists(os.path.join(folder, 'config')):
         gclient_utils.rmtree(folder)
         cmd = ['clone'] + v + ['-c', 'core.deltaBaseCacheLimit=2g',
-                               '--progress', '--mirror']
+                               '--progress', '--bare']
 
         if use_reference:
           cmd += ['--reference', os.path.abspath(self.checkout_path)]
 
         self._Run(cmd + [url, folder],
                   options, filter_fn=filter_fn, cwd=self.cache_dir, retry=True)
       else:
         # For now, assert that host/path/to/repo.git is identical. We may want
         # to relax this restriction in the future to allow for smarter cache
         # repo update schemes (such as pulling the same repo, but from a
@@ skipping 729 matching lines @@
       new_command.append('--force')
       if command[0] != 'checkout' and scm.SVN.AssertVersion('1.6')[0]:
         new_command.extend(('--accept', 'theirs-conflict'))
     elif options.manually_grab_svn_rev:
       new_command.append('--force')
       if command[0] != 'checkout' and scm.SVN.AssertVersion('1.6')[0]:
         new_command.extend(('--accept', 'postpone'))
     elif command[0] != 'checkout' and scm.SVN.AssertVersion('1.6')[0]:
       new_command.extend(('--accept', 'postpone'))
     return new_command